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OPERATION TUMBLER SNAPPER, REPORT TO THE TEST DIRECTOR, TEST OF SCINTILLATOR OPTICAL-PATH TECHNIQUE (DELETED)

KRAUSE, E H [NAVAL RESEARCH LABORATORY, U.S.]; BERGSTRALH, T A [NAVAL RESEARCH LABORATORY, U.S.]; BEACH, L A [NAVAL RESEARCH LABORATORY, U.S.]; GOLIAN, S E [NAVAL RESEARCH LABORATORY, U.S.]; MILLER, D V [NAVAL RESEARCH LABORATORY, U.S.]; MOSKOWITZ, B R [NAVAL RESEARCH LABORATORY, U.S.]; MCCOY, A E [NAVAL RESEARCH LABORATORY, U.S.]; MARLOW, K W [NAVAL RESEARCH LABORATORY, U.S.]; ROBISON, H I [NAVAL RESEARCH LABORATORY, U.S.]; TROGDON, F H [NAVAL RESEARCH LABORATORY, U.S.]; CAMPBELL, N M [NAVAL RESEARCH LABORATORY, U.S.]; FRAME, J M [NAVAL RESEARCH LABORATORY, U.S.]; MCCROSKEY, G L [NAVAL RESEARCH LABORATORY, U.S.]; COOK, D C [NAVAL RESEARCH LABORATORY, U.S.]

RESEARCH PROGRAMS; SCINTILLATION COUNTING; MIKE EVENT; IVY OPERATION; MEASURING METHODS; GAMMA DETECTION; MEASURING INSTRUMENTS

Location - DOE/NNSA NUCLEAR TESTING ARCHIVE Address - P.O. Box 98521 City - Las Vegas State - NV Zip - 89193-8521 Phone - (702)794-5106 Fax - (702)862-4240 Email - NTA@NV.DOE.GOV

REPORT

1953 Jun 30

Sanitized

0086

NV0051009

WT567EX

NAVAL RESEARCH LABORATORY, U.S.

1994 Aug 26

2008 Mar 31

EXPERIMENTS WERE CONDUCTED TO DETERMINE THE FEASIBILITY OF A TECHNIQUE EMPLOYING SCINTILLATORS NEAR THE DEVICE IN CONJUNCTION WITH REMOTE PH OTOSENSITIVE DETECTORS FOR MEASUREMENTS OF REACTION HISTORY TO BE COND UCTED ON MIKE SHOT OF OPERATION IVY AND TO DETERMINE THE MAXIMUM GAMMA -RAY INTENSITY AND TOTAL DOSAGE AT WHICH SCINTILLATORS COULD BE EMPLOY ED. INSUFFICIENT DATA WERE OBTAINED TO PREDICT ACCURATELY THE BEHAVIO R OF SCINTILLATORS AT HIGH GAMMA INTENSITIES; HOWEVER, IT WAS UNEQUIVO CALLY DETERMINED THAT THE TECHNIQUE WOULD NOT BE SUITABLE FOR IVY MEAS UREMENTS. FOR THE TECHNIQUE TO BE ACCEPTABLE A SUFFICIENT SIGNAL WAS REQUIRED FROM THE DETECTORS TO COVER A WIDE DYNAMIC RANGE (FOUR ORDERS S) OF MEASUREMENTS. ) OF MEASUREMENTS. SINCE THE TELLER LIGHT WAS DOWN IN MAGNITUDE FROM THE SCINTILLATOR LIGHT BY NOT MORE THAN ABOUT TWO ORDERS, IT WOULD HAV E BEEN NECESSARY TO SHIELD THE OPTICAL PATH TO HAVE SUFFICIENT DYNAMIC RANGE. THIS SHIELDING WOULD HAVE BEEN PROHIBITIVELY EXPENSIVE. THE SIGNAL OBTAINABLE AT THE RECORDING STATION WOULD HAVE REQUIRED THE USE OF HIGH-GAIN PHOTOMULTIPLIERS AND AMPLIFIERS THROUGHOUT THE SYSTEM. IN ADDITION, THE SIGNAL, WAS UNPREDICTABLE, WITH UNKNOWN SPURIOUS BACK GROUND SIGNALS. IT WAS HIGHLY IMPROBABLE THAT THE MINIMUM REQUIRED DA TA COULD HAVE BEEN OBTAINED FOR THE IVY MIKE SHOT.